An overview of signal processing of the proposed model is shown in Fig. . First, noisy vowel /a/ f(t) shown in Fig. A (the SNR of f(t) is 10 dB) for simulation 2 is decomposed into Sk(t) and as shown in Fig. B and C, respectively. Next, F0(t) is estimated as shown in Fig. D. The concurrent time-frequency region of the desired signal f1(t) is determined using constraints (i) and (iii) as shown in Fig. E and F. Finally, the instantaneous amplitudes and the instantaneous phases of two signals are determined from Sk(t) and using constraints (ii) and (iv). The determined Ak(t) and are shown in Fig. H and I, respectively. The segregated signal is shown in Fig. J.